Fountain-pen



(No Model.)

W; W. STEWART. FOUNTAIN PEN.

No. 254,174. Patented-lab. 28, 1882.

Inventor:

N. PETERS. Fhctwbllwgnphcn wmm m. n. c.

- PATENT ()FFICE.

5 UNITED STATES WILIITAllI w. STEWART, or BROOKLYN, NEW YORK.

FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 254,174, dated Februaly28, 188 2.

Application filed March 16, 1881. (No model.)

useful Improvements in Fountain-Pens; and' I do hereby declare that thefollowing is a full.

and accurate description of the same.

This invention relates to that class of fountain-holders which areadapted to use common or split-nib pens, and the object of it is toantomatically regulate and control the flow of ink from the reservoir,while at the same time a bath or supply of ink is maintained, in con.tact with the pen, from which the immediate supply is drawn in the actof writing. --I

Thebasis of this improvement is the gutter or bath, which is placeddirectly below the pen to receive ink from the reservoir and dcliver itto the pen. V

Heretofore the supply or ink flow from the reservoir has been regulatedby a cut-off or stop-cock, which was controlled at will by the user. Forthe non-automatic stop I substitute, .automatic devices. The use of myautomatic devices also imparts other functions of which thenon-automatic holder was not capable.

That others may fully understand my im- 'provement, I will moreparticularly describe it, having reference to the accompanying drawings,wherein- Figure 1 is a longitudinal section of my penholder, showing thepen flexed in the act of writing. Fig. 2 is a similar section ofthelower end enlarged, showing the pen at rest.

Ais the gutter under the pen P. It is a vessel'shaped like the half of aboat, with the prow or pointed end outward, and extending nearly to thepoint of the pen. At its base the gutter A is joined to the end section,Q, which in turn is screwed intothe end of the reservoir or barrel I.The open side of the gutter A is toward the pen.

X is a slit or seat to receive and hold the base of the pen.

G is the supply-lube, through which ink descends from the reservoir tothe gutter A.

R is a rod, which passeslengthwise through the tube 0, and carries atthe outer end of said tube a valve or gate, D, which closes said tubewhen pressed upward against its open end.

The rod R, outside the gate D, is bent upward, and formed so as toconstitute a light or delicate spring, F, which rests and pressesagainst the nibs of the pen. The extremity of the spring F is secured ina little hole or cavity,

B, at the extremity or pointlof the gutter A,

and the spring F is adjusted ,to bear against the pen, so as'to closethe gate D when the nibs of the pen are at rest in their normalposition; but when in use the nibs are caused to bend backward, thespring curves in thesame direction and opens the gate, so that inkispermitted to descend into the gutter during the time when it is beingdelivered to the paper. .At the completion of the downstroke and duringthe upstrokes, when the nibs of the pen are together and in their normalposition, the consequent depression of the spring F causes the gate Dtojclose and arrest theoutflow of ink. V

The rodR has near its upper end within the barrel a shoulder orcross-pin, f, to engage with a tube or rod, L, which passes up throughthe head J, where it is provided with a screwthread, N, so that byturning said head said rod may be moved longitudinally and the gate Dcaused to open by pushing the rod B. To facilitate this movement thehead J is provided with a knurl for the easy grasp of thefingers.

The head J may be inserted in the end of the or it may be fitted with ascrew, in which case said screw-thread and the screw N will bedifferential as to each other, so that the turning of the head Jbackward will force the rod L forward.

M is a packing of soft rubber to prevent the ink from gaining access tothe screw N.

K K are slots in the barrel I to make the same compressible, and at thatpoint said barrel is provided with flexible lining z, of soft rubber.These slots are not essential, but have a utility which will beexplained.

When the pen is in use bubbles of air enter the reservoir as the inkflowsout, and to prevent these bubbles from accumulating and obstructingthe flow I insert a small open capillary tube formed by a coil, S, offine non-corrodible wire, which will serve to collect and conduct thelittle bubbles rapidly away from the vicinity of the supply-pipe O; andsaid coil may be protected within the rod L, which may be made tubularfor the purpose.

In practice I prefer to make the rod R of gold wire, and constitute thespring F by heating the same out flat at part 1).

In using this pen, at the com mencement'the gutter may be charged withink by opening the gate D with the rod L, as described, and the ink willthus descend to the gutter. This movement of the ink may be facilitatedby squeezing the barrel at its slotted part. When the gutter has beencharged the rod L is withdrawn, and while writing the supply ot'ink willbe automatically provided by the movement of the gate-D, controlled bythe pen, as set forth. After use the gate D is again opened by the rodL, and the pen being held with the point upward the barrel is gentlysqueezed to expel a part of its inclosed air, and upon relaxing thepressure the ink in the gutters is drawn again into the reservoir.

G is a jacket which surrounds and protects the base of the pen, and H isthe tip or removable cover fitted to the end of the jacket to cover andprotect the point. of the pen while notin use.

Having described my improvement, what I claim as new is l. The gutters Aand supply-tube G, combined with the yalve D and spring F, one endwhereof is connected to said valve and the other end attached to thepoint of said gutter, and the middle portion adjusted to bear againstthe inner side of the nibs of the pen, as set forth.

2. The supply-tubeGof afonntain pen-holder, with a valve, D, and springI*, combined with a rod, R, extending from said valve up through saidsupply-tube, and a tube or rod, L, within the reservoir, whereby saidvalve may be opened independently of the pen, as set forth.

3. A supply tube or port provided with a reciprocating valve openingoutward, and kept closed by pressure from the pen, and means,

substantially such as described, whereby said valve may be opened atwill, combined with an ink reservoir or barrel, provided with walls madeelastic by slots K, or otherwise, as set forth.

4. In a fountain-holder, a reservoir and a supply-tube, (J, combinedwith an open capillary tube, constituted by a coil, S, of finenoncorrodible wire, extending from said supplytube upward into thereservoir, to conduct away the little air-bubbles without impeding theflow of ink.

5. In a fountain pen-holder, a reservoir and a supply tube or port, 0,whereby ink may pass from the reservoir to the pen, combined with anopen capillary tube, constituted by a coil of fine noncorrodible wire,extending upward from said supply-tube, and a tubular rod, L, to incloseand protect said coil, as set forth.

WILLIAM W. STEWART.

Witnesses:

D. A. SAYRE, W. WonLMAoiIER.

